Taichi and Agumon aren't in peril, so much as they're part of the fray. And... well, an Adult level is going to be far more effective than a Child in dispatching these robots.

"Thanks, Ken, Stingmon!" Taichi calls out, before directing his attention back to Agumon. "We can't fall behind though, Agumon! Come on!"

Agumon nods. "Baby Flame!" he calls out, spitting fire at another one of the security droids, this time hoping to be able to take out one of its weapons.